[Perf] Windows/x64: 2 Regressions on 7/13/2026 9:16:21 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [4a6c691f97cd93b08ef0794d297de622e4409e66](https://github.com/dotnet/sdk/commit/4a6c691f97cd93b08ef0794d297de622e4409e66)
Compare | [50dbab4de210e882172b07934e9666313b7065f1](https://github.com/dotnet/sdk/commit/50dbab4de210e882172b07934e9666313b7065f1)
Diff | [Diff](https://github.com/dotnet/sdk/compare/4a6c691f97cd93b08ef0794d297de622e4409e66...50dbab4de210e882172b07934e9666313b7065f1)
Configs | CompilationMode:tiered, RunKind:bepuphysics

### Regressions in DemoBenchmarks.GroupedCollisionTesterBenchmarks

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|

• [CheapCollisionBenchmarks - Duration of single invocation]()
• 📝 - [Benchmark Source]()
• [ADX - Test Multi Config Graph]()

| 22.39 μs | 26.48 μs | 1.18 | 0.00 | True | | |

![graph]()
[Test Report]()

### Repro
General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

```cmd
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'DemoBenchmarks.GroupedCollisionTesterBenchmarks*'
```

### DemoBenchmarks.GroupedCollisionTesterBenchmarks.CheapCollisionBenchmarks

#### ETL Files

#### Histogram

#### JIT Disasms

### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

---

### Run Information

Name | Value
-- | --
Architecture | x64
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [4a6c691f97cd93b08ef0794d297de622e4409e66](https://github.com/dotnet/sdk/commit/4a6c691f97cd93b08ef0794d297de622e4409e66)
Compare | [50dbab4de210e882172b07934e9666313b7065f1](https://github.com/dotnet/sdk/commit/50dbab4de210e882172b07934e9666313b7065f1)
Diff | [Diff](https://github.com/dotnet/sdk/compare/4a6c691f97cd93b08ef0794d297de622e4409e66...50dbab4de210e882172b07934e9666313b7065f1)
Configs | CompilationMode:tiered, RunKind:bepuphysics

### Regressions in DemoBenchmarks.TwoBodyConstraintBenchmarks

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|

• [AngularHinge - Duration of single invocation]()
• 📝 - [Benchmark Source]()
• [ADX - Test Multi Config Graph]()

| 100.38 μs | 137.04 μs | 1.37 | 0.00 | True | | |

![graph]()
[Test Report]()

### Repro
General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

```cmd
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'DemoBenchmarks.TwoBodyConstraintBenchmarks*'
```

### DemoBenchmarks.TwoBodyConstraintBenchmarks.AngularHinge

#### ETL Files

#### Histogram

#### JIT Disasms

### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

Run the supplied benchmarks_ci.py commands for the two named benchmark filters on Windows x64. Read src/benchmarks/real-world/bepuphysics2/GroupedCollisionTesterBenchmarks.cs and TwoBodyConstraintBenchmarks.cs, then compare results with the linked baseline and compare commits. Done means the reported regressions are reproduced and their cause is identified or explained.

Written by the indexing model from the issue text.